XV IMGTA, Urbino (Italy) July 9-12, 2003
Final Program

July 9, Wednesday

1A: VOTING I: European Union (Organizer: Gianfranco Gambarelli, Chair: A. Laruelle)

• C. Bertini, G. Gambarelli(*) and I. Stach: "Apportionment Strategies for the European Parliament"
• A. Lehtinen: "The welfare consequences of strategic voting in plurality runoff rule"
• M. Widgren:  "Designing EU Decision-making Procedures"
• A. Laruelle, R. Martinez(*) and F. Valenciano: "On the difficulty of making decisions  within the EU-25"

1B: TU Games I (Chair: J. Puerto)

• J. D. Moreno-Ternero: "Bankruptcy Rules and Manipulation via Merging or Splitting Agents' Claims"
• S. Tijs, R. Branzei, S. Ishihara and S. Muto(*): "On cores and stable sets for fuzzy games"
• M. Larbani(*)  and  Y. Askoura: "A Result on the non Emptiness of the alpha-core"
• F.R. Fernandez and J. Puerto(*): "On the core of set-valued cooperative games"

1C: Dynamic Games I  (Chair: V. Calabuig)

• V. Calabuig(*) and G. Olcina: "How does cultural transmission solve the conflict between  efficiency and risk dominance in a coordination problem?"
• F. Kojima: "Risk-Dominance and Perfect Foresight Dynamics in N-Player Games"
• P. Strimling: "When you don't know your own good".

1D: Non Cooperative Games I (Chair: G. Olcina)

• K. Kultti, T. Takalo(*) and J. Toikka: "The Patent-Antitrust Conflict: A Re-Assessment"
• M. Dreef(*) and P. Borm: "On the role of chance moves and information in two-person games"
• M. Ostrovsky and  M. Schwarz(*): "The Adoption of Standards under Uncertainty"
• L. Escriche, G. Olcina(*) and R. Sanchez: "Education and Family Income Levels: Can Poor Children Signal their Talent?"

2A: OWEN I: European Union (Organizer: G.Gambarelli, Chair: M. Widgren)

•   J. M. Barr and F. Passarelli(*): "Where is the Power in the EU?"
•   M. Widgren: "Inter-Institutional Power in Composite and non-Cooperative Games: the Case  of the EU"

2B: NTU Games (Chair: R. Hendrickx)

• G. Laffond and J. Laine(*): "Job Market with Couples : Core Stability"
• J. Vidal-Puga: "Forming societies and the Shapley NTU value"
• R. Hendrickx: "Inheritance of properties in NTU communication situations"

2C: Dynamic Games II (Chair: N. Vieille)

• L. Grilli: "Resource extraction activity: an intergenerational approach"
• J. P. Rincón–Zapatero: "Discontinuous Markov Perfect equilibrium in differential games"
• R. Laraki, E. Solan and N. Vieille(*): "Continuous-time games of timing"

2D: Game Practice and Transportation (Organizer and Chair: Vito Fragnelli)

• L. Fernandez: "Maritime Trade and Invasive Species Management Strategies"
• G. Kharabadze: "End of Boeing’s Monopoly: How Does Airbus’ A380 Introduction Affect Large Commercial Aircraft Industry?"
• J. Castro and J. Tejada(*): "The proportional rule for problems with constraints and weights with application to PERT games"

3A: Bargaining I  (Chair: H. Vartiainen)

• M. Mariotti and A. Villar(*): "Rationing Utilities"
• Sang-Chul  Suh and Quan Wen(*): "Multi-Agent Bilateral Bargaining with Endogenous Protocol"
• H. Vartiainen: "Higher order uncertainty in Coasian bargaining"

3B:  Oligopoly Games and Complexity I  (Organizer and Chair: Tönu Puu)

• A. Agliari (*), T. Puu and L. Gardini: "Global Bifurcations in a Duopoly Model with Adaptive Adjustment Process"
• L.Mallozzi(*) and J.Morgan: "On equilibria for oligopolistic markets with leadership and demand curve not free from gaps and discontinuities"
• I. Sushko (*), L. Gardini and T. Puu: "Duopoly with Piecewise Linear Discontinuous Reaction Functions"

3C: Repeated Games I  (Chair: J. Vila)

• In-Koo Cho and A. Matsui(*): "Learning Aspiration in Repeated Games"
• A Urbano(*) and J. Vila: "Coordination on d-day: the e-mail stochastic game"

3D: Normal Form Games I  (Chair: K. Kultti)

• M. C. Peixoto-Matos(*), M. A. M. Ferreira: "Best Payoff Method"
• J. Robles: "Order Independence of Conditional Dominance"
• K. Kultti(*) and A. Miettunen: "Two-player normal form games in general equilibrium"

4A: Bargaining II (Chair: A. Rusinowska)

• P. Manzini(*) and C. Ponsati: "Stakeholder Bargaining Games"
• A. Rusinowska (*) and H. de Swart: "Negotiating a stable government - Application of bargaining theory to a model of coalition formation"

4B: Oligopoly Games and Complexity II (Organizer and Chair: Tönu Puu)

• A. Naimzada: "Market games with local knowledge"
• T. Puu: "Hotelling's Ice Cream Dealers with Elastic Demand"

4C: Equilibria I (Chair: J. Hofbauer)

• L. Cherfi(*), H. Aboukandil and Ms Radjef: "On the Nash Pareto equilbrium in disturbed game"
• J. Hofbauer, D. Oyama(*) and S. Takahashi: "Monotone Methods for Equilibrium Selection under Perfect Foresight Dynamics"

4D: Contracts and Mechanisms (Chair: J. L. Hougaard)

• D. Filipovich(*) and S. Chatterji: "Ambiguous Contracting: Natural Language and Judicial Interpretation"
• J. L. Hougaard(*), A. Kock and M. Tvede: "Are digital goods worth the effort?"

  10:00 - 10:50 ( Aula MAgna ) Plenary Lecture (Chair:  Jacqueline Morgan)

  Leon A. Petrosjan, St. Petersburg State University, Russia
  "Cooperation in Differential Games"
   

  Coffee Break 10:50 - 11:20
  Parallel Sessions 11:20 - 13:00

5A: Coalition Formation (Organizer: Gianfranco Gambarelli, Chair: E. Fukuda)

• S. Currarini and M. A. Marini(*):  "First-mover coalitional advantage in NTU Games with Externalities"
• M. Montero: "Two-Stage Bargaining with Reversible Coalitions: the Case of Apex Games"
• C. Kjær:  "Dynamic Formation of Currency Unions"
• E. Fukuda(*) and S. Muto: "Dynamic Coalition Formation in Apex Games"

5B: TU Games II  (Chair: H. Norde)

• J. Sánchez Soriano (*), N. Llorca, E. Molina and M. Pulido: "Properties of the core and related concepts in Transportation Games"
• M. Quant(*), P. Borm, H. Norde, H. Reijnierse ans B. van Velzen: "On the Core and Core Cover of TU-games"
• U. Ozen(*), J. Fransoo, H. Norde and M. Slikker: "Cooperation between Multiple Newsvendors with Warehouses"
• B. van Velzen, H. Hamers and H. Norde(*): "Characterizing convexity of games using marginal vectors"

5C: OWEN II: Multilinear Extensions and Networks (Organizer: Gianfranco Gambarelli, Chair: J. M. Bilbao)

• M. Saboyá: "Coordination in Small-world Networks"
• C. Manuel (*), G. Owen, M. del Pozo, D. Gómez and E. González-Arangüena: "A Characterization of the Myerson and Position Values in Communication  Situations"
• M. J. Holler(*) and S. Napel: "Local Monotonicity of Power: Axiom or Just Property?"
• J. M. Bilbao: "The Myerson value for augmenting structures"

5D: Information (Chair: P. Battigalli)

• O. Board: "The Not-So-Absent-Minded Driver"
• K. Annen: "Social Norms, Communication, and Community Enforcement"
• F. Forges and F. Koessler(*): "Communication Equilibria with Partially Verifiable Types"
• P. Battigalli: "Rationalization in signaling games: Theory and Applications"

6A: VOTING II: Voting Systems (Organizer: Gianfranco Gambarelli, Chair: H. Nurmi)

• G. B. Asheim(*), C. A. Claussen and T. Nilssen: "Majority voting leads to unanimity"
• T.Perlinger: "A note on voting games and ideological compatibility"
• H. Nurmi: "A Responsive Voting System"

6B: Cost Allocation I (Chair: A. Meca)

• R. Wolff: "A Characterization of Equitable Core Allocations in Cost-Sharing Games"
• V. Fragnelli(*), M. E. Marina: "Rights in Profit Sharing"
• A. Meca: "A core-allocation family for holding cost games"

6C: Normal Form Games II (Chair: J. Morgan)

• J. Morgan and M. Romaniello(*): "A dual Method for Social Nash Equilibria"
• M. Margiocco and L. Pusillo (*): "Value Bounded Approximations for Nash equilibria"
• J. Morgan and V. Scalzo(*): "Sufficient conditions for parametric Tykhonov well-posedness in optimization and non cooperative games"

6D: Equilibria II (Chair: A. Urbano)

• I. Arribas(*) and A. Urbano: "Mixed bundling strategies and a Package Assignment Problem"
• Y. Pankratova(*), S. Tarashnina: "Punishment strategy in one pursuit game"
• A. Urbano(*) and J. Vila: "A Communication Protocol for Random Consensus in the Coordinated Attack Problem"

7A: VOTING III: Voting Rules (Organizer: Gianfranco Gambarelli, Chair: S. Vannucci)

• J. Snyder(*), M. M. Ting and S. Ansolabehere: "Legislative Bargaining under Weighted Voting"
• A. V.  Vladimirov: "Voting Games and Binary Decision Rules represented by Boolean Functions"
• S. Vannucci: "An Effectivity-Function Model of Strongly Core-Stable Government Forms with Umpires"

7B:  Cost Allocation II (Chair: B. van Velzen)

• S. Moretti and F. Patrone(*): "TU Games with Information Costs"
• S. Tijs(*), R. Branzei, S. Moretti and H.Norde: "Sharing costs in minimum spanning tree problems"
• B. van Velzen: "Dominating set games"

7C:  Repeated Games II (Chair: M. Aramendia)

• N. Dimitri: "Time Consistency and Time Discounting"
• P. Manzini and M. Mariotti(*): "A Vague Theory of Choice over Time"
• M. Aramendia: "Collusion with and without entry threats"

7D:  Miscellanea  (Chair: R. Deloche)

• E. Suleymenov: "The complete solution of the problem of kind in the linear differential games of pursuit and evasion"
• R. Deloche(*) and F. Oguer: "Game theory, Poe’s detective novels and the mystery of his final days"

8A: OWEN III: Dynamics and LP (Organizer: GianfrancoGambarelli, Chair: M. Holler)

• M. J Ryan: "Non Constant Sum and R+S Player Extensions of the Linear  Programming Representation of Two Person Constant Sum Games"
• J. Garay(*),  A. Scarelli,  Z. Varga and R. Cressman: "The Dynamic Stability of Coalitionist Behaviour for two-Strategy Bimatrix  Games"

8B: VOTING IV: Power Indices  (Organizer: Gianfranco Gambarelli, Chair: A. Rusinowska)

• M. Malawski: "Counting power indices for games with a priori unions"
• A. Rusinowska(*) and H. de Swart: "Generalization and modifications of the Hoede-MailBakker index"

8C: Nonlinear Oligopoly Games I (Organizer and Chair: Akio Matsumoto)

• L. Grauer: "Strong Nash Equilibrium in Stochastic Games"
• F. Kacher and M. Larbani(*): "A Concept of Solution for a non Cooperative Game with Fuzzy Parameters"

8D: Public Goods (Chair:  S. Currarini)

• M. Koster(*), H. Reijnierse and M. Voorneveld: "Voluntary contributions to multiple public projects"
• S. Currarini: "Stable Organizations with Externalities"

  10:00-10:50 ( Aula Magna ) Plenary Lecture (Chair: Stef Tijs)

  Ignacio Garcia-Jurado, Santiago de Compostela University
  "Two Problems in the Borderline between Cooperative and Non-Cooperative Games"

9A: Auctions (Chair: N. Dimitri)

• S. Bandypadhyay: "Hahn and Noll's Revenue Neutral Auction, Markets for transferable property rights and efficiency: a critique in a game theoretic framework"
• M. Bresky: "Existence of Pure Strategy Equilibria in Multi-unit Private Value Auction Games"
• E. Grigorieva, P. J.-J. Herings, R. Mueller and D. Vermeulen(*): "The private value single item bisection auction"
• N. Dimitri: "Last-Minute Bidding Equilibrium in second price internet auctions"

9B: Games and the Environment (Chair: J. Vyrastekova)

• A. Agliari e A. Naimzada (*): "An enviromental public good game in the OLG framework"
• A. Dinar, S. Moretti(*), F. Patrone and S. Zara: "Application of Stochastic Cooperative Games in Water Resources"
• C. S. Tapiero: "Environmental Quality Control and Environmental Games"
• J. Vyrastekova(*) and D. van Soest: "Natural resource management in socially complex societies: An experimental study"

9C: Learning  I (Chair: J. Wenzelburger)

• A. Namatame: "Social Games with Collaborative Learning"
• F. Germano(*) and E. Lehrer: "Learning to Play Boundedly Rational Rules for Normal Form Games"
• J. Wenzelburger: "Learning to Play Best Response"

9D: OWEN IV Applications (Organizer: Gianfranco Gambarelli, Chair: F. Carreras)

• V. Fragnelli(*) and  Anna Iandolino: "A Cost Allocation Problem in Urban Solid Wastes Collection and Disposal"
• R. Nieva: "Enforcers, Empty Cores and Ineffective Implementation"
• G. Gambarelli(*) and S. Pesce: "Take-over Prices and Portfolio Theory"
• F. Carreras: "Alpha-decisiveness in simple games"

10A: OWEN V: A Priori Unions  (Organizer: Gianfranco Gambarelli, Chair: F. Valenciano)

• M. A. Pulido(*) and J. Sánchez-Soriano: "On Convexity in Games with a Priori  Unions"
• M. Ball: "Extending Owen's Union Concept: Superplayers, their Agreements, and the Resultant Solution for Cooperative Games"
• A. Laruelle(*) and F. Valenciano: "On the meaning of Owen-Banzhaf coalitional value"

10B:  Non Cooperative Games II  (Chair: A. Possajennikov)

• A. Billot, I. Gilboa(*) D. Samet, and D. Schmeidler: "Probabilities: Frequencies Viewed in Perspective"
• B. Bassan:  "Strategic Option Pricing"
• E. Amann and A. Possajennikov(*): "Evolution in Symmetric Incomplete Information Games"

10C: Nonlinear Oligopoly Games  II (Organizer and Chair: Akio Matsumoto)

• K. Uchiyama (*), A. Namatame and Y. Aruka: "An Asymmetric Oligopoly Game and Information Guidance"
• T. Onozaki: "Cournot vs Bertrand Reconsidered"
• A. Matsumoto (*) and M. Suzuki: "Cournot Dynamics with Heterogeneous Duopolists"

10D: Learning II  (Chair: U. Berger)

• G.I. Bischi, L. Sbragia (*) and F. Szidarovszki: "Global Asymptotics in a Dynamic Learning Model of Oligopolies"
• K. Kultti and P. Miettinen(*): "Herding with costly information"
• U. Berger: "A general model of best response adaptation"

11A: Position Value (Chair: M. Slikker)

• M. del Pozo (*), D. Gómez, E. González-Arangüena and C. Manuel: "Calculating the Position Value for Communication Situations"
• D. Gómez (*), E. González-Arangüena, C. Manuel, and M. del Pozo: "A Characterization of the Myerson and Position Values for Hypergraph Communication Situations"
• E. González-Arangüena (*), C. Manuel, M. del Pozo and D. Gómez: "The Position Value and the Centrality in Social Networks"
• M. Slikker: "A characterization of the position value"

11B: Values in TU Games (Chair: D. Wettstein)

• S. Tarashnina: "Shapley Value in a Differential TU-game with Nonlinear Payoff Function"
• R. van den Brink(*), G. van der Laan and V. Vasil'ev: "On the distribution of dividends in games with ordered players"
• D. Perez-Castrillo and D. Wettstein(*): "An Ordinal Shapley Value for Economic Environments"

11C: Evolutionary Games (Chair: P. Sacco)

• C. Alós-Ferrer and A. B. Ania(*): "The evolutionary logic of feeling small"
• P. Zapata: "Long Run Equilibria in the Learning Processes"
• G.I. Bischi, F. Lamantia (*) and L. Sbragia: "Competition and cooperation in natural resources exploitation: An evolutionary game approach"
• A. Naimzada and P. Sacco(*): " Noise traders permanence in stock markets: an evolutionary approach"

11D: Extensive Form Games (Chair:  S. Takahashi)

• L. P. Østerdal: "Iterated weak dominance and subgame dominance"
• G. Bergantiños and L. Lorenzo Picado(*): "Non Cooperative Cost Spanning Three Games with Budget Restrictions"
• C. Alos-Ferrer(*) and K. Ritzberger: "Trees and Decisions"
• S. Takahashi: "Effective minimax values in extensive form games with almost perfect information"

For information please send an e-mail to
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